Wire-drawing machinery



F. G. KEYES.

WIRE DRAWING MACHINERY.

APPLICATION FILED MAR. 22. I918.

Patented Jime 1, 1920.

2 SHEETS-SHEET I.

8 m U W F. G. KEYES.

WIRE DRAWING MACHINERY.

APPLICATION FILED MAR. 22. 1918.

2. R -H 92 m N 04 l A ns um A dS m av I UNITED STATES PATENT orrlcs'.

FREDERICK GEKEYES, F HOBOKEN, NEW JERSEY, ASSIGNOR TO COOPER HEWITT ELECTRIC. COMPANY, 'OF HOIBOKEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WIRE-DRAWING MACHINERY.

Patented June 1, 1920.

Application filed March 22, 1918. Serial Nth-223,895.

To all whom it may concern:

Be it known that I, Fnnnnmon G. KnYEs, a citizen of the United States, and resident of Hoboken, county of Hudson, State of New Jersey, have invented certain new and useful Improvements in Wire-Drawing Machinery, of which the following is a specification.

' hold of the wire at the first mentioned end,

whereby a steady pull on the wire is exerted ,and breaks due to uneven pulllng are avoided; second, afiording facilities for heating the die and for heating the wire prior to its passage through the die; and for coiling the drawn wire on a suitable drum.

I have illustrated my invention in the accompanying drawings in which Figure 1 is a plan view of my new machine; Fig. 2 is a side elevation thereof, partly sectional, and gig. 3 is asectional View at the line 3, 3, in

In the drawings a table or bench made up of two parallel T, I or L beams, 1, 1, held in place by means of bolts 2, 2, 2, is su ported on suitable standards ,(not shown Below the bench 1, and to one side thereof, there is mounted the driving mechanism of the machine, the shaft, 3, being j ournaled in a hanger, 4, and being provided with a driving gear, 5, driven by a worm gear, 6, mounted on a shaft, 7, which, in turn, is actuated by a pulley, 8, connected with any suitable sources of power. On the driven shaft, 3, and in the open space between the sides of the bench there is mounted a able intervals along the length of .the'

sprocket chain there are mounted wire-gripping devices, 14, 15 and 16. On either side of the table I have mounted guide plates 17 and 18 which are channeled as shown at 19 and 20 (Fig. 2) to receive the lugs, 21 and 22 on the base plates of the wire grips 14, 15 and 16.

At one end" of the table there is mounted in suitable brackets, 23, 23, a drum, 24, about which is coiled the wire, 25, to be drawn. A. sprlng brake, 26, mounted on one side of the table presses against the drum 23'to regulate the speed thereof. Suitable guides, 27 and 28', for holding the wire in a straight line during Its progress through the machine are provided, one at each end.

, A suitable die, 29, through which thewire is to be drawn, is provided at the feeding end of the machine. When desired, the die, 29, is heated, as by a flame, 30, playing on a sleeve, 31, through which the wire passes, the sleeve being attached to the die 29. In the event that a preheating of the wire itself is desired, this can be accomplished by passceiving drum 35 is rotated by the pulley, 38,

on the end of the shaft, 36, which is connected by a belt (not shown) with a pulley, 39 on the main driving shaft 3.

The gripping devices 14, 15'and 16 are shown in detail in Fig. 3. Here the base plate of the gripping device is shown at 40, the sides or lugs, 21 and 22, of which engage with .the grooves 19 and20. Through the center of this base plate a bolt, 41, extends on both sides thereof, and acts as a bearing on both sides of said base plate for the pivoted jaws 42, 42. Above the jaws 42, 42 and cotiperating therewith are plates, 43, 43, each provided at one side and at the center thereof with a roller bearing, 44, 44, engaging with the top sides of the plates 1 and 18. The members 43 and 42 are yield- .ably joined together by means of bolts 45,

I has been ment of bolts 45 and springs 45 is duplicated on the other end of the guppmgdevice as indicated at 47,.a nd 48. A spring, 49, is provided forEinsurmg that the aws 42. 42, will separate from the w re at the end of the runway. When a wire is gripped by,the 'aws, the aw plates 42, 42 are moved from tie l evel osition shown in Fig. 3 adistance determined by the width of the. wire and will rest on the contiguous edge of the lates 43, as a bearing, andbe held there by t 1e compressing action of the springs 46,

which aid the jaws in holding the wire. It is desirable sometimes to face the inside of the grip 'aws in contact with the wire with a small section of jewelers file. This is illustrated in Fig. 1, at 52, 52. It is,

however, in many cases only necessary to use the smooth faces of the jaws for many of the softer metals. The rougher jaws are more suitable for tungsten, molybdenum, or platinum-iridium.

After aportion of the wire to be drawn assed through the die and attached and placed in the jaws of the wire grip 15, and the machine started into operation, the grip will pull the wire alon w1th it until it. reaches the position at t e extreme right of the machine whereupon the gri 16 will come into place at the left hand end of the runway, the rollers 44, 44, Wlll move up the tapered portions 50, 50, of the plates 17 and 18, closin the jaws on'the wire and travel a short' istance before the rollers 44, 44, run down the tapered portions 51, 51 causing the grip 15 to let go of the wire. The grlp 16, then, in its turn, will pull the wire along until it reaches a point near the right hand end of the trackway when the grip 14 will'enter the track at the other end and grip the wire before the grip 16 has released it. It is important to so' space these grips on the endless chain 13 that one shall have taken hold before the other has let go as in this way a steady pull is exerted on the wire being drawn throughv the die 29 and breaks in the wire due to the strains of uneven pulling are avoided. The drawn wire is coiled on'the receiving drum 35 and may be redrawn by interchanging the drums 35; and 24 and substituting a new die at 29 and the process repeated as described herein. The length of the strip 17, 18 can evidently be made of a length suflicient to carry out this process of successive and simultaneous gripping of the wire when the three grips are evenly spaced on the endless chain. The speed of drawing wire of a given material depends considerably upon the properties of the material. For example, a hard material, suchas tungsten or even nickel-chromium wire,

requires a slower drawing than does a wire of comparatively soft material, such as copper or silver. y means of a series of gears devices, it is to be understood that t e num-,

ber of said grips can be increased to meet the varying condition of service to which a machine operating on the principle described herein may be subjected.

I claim as my invention:

1. An apparatus for drawing a wire con sisting of a revolving drum for holding and releasing the wire, a die for reducing the diameter'thereof, grip ing devices mounted on an endless chain or pulling the wire, said gripping devices comprising a base plate, aflpair of jaws pivoted on said base plate an a ed on said ase' plate and functionin as bearings for the jaws, and a receiving rum aroun which the drawn wire is wound.

2. An apparatus for drawing a wire consisting of a drum for holding the wire, a die for reducing the diameter thereof, gr1pping devices for pulling "the wire through the die, said gripping devices com rising a base plate, a (palr of jaws ivote on said base plate an a pair of p ates yieldingly mounted on said base plate and functionlng as bearings for the jaws, anda receiving drum around which the drawn wire is wound.

3. An apparatus for drawing a wire consisting of a drum for holdin the wire, a die for reducing the diameter t ereof, means for pulling the wire through the die, said means including a grippin device comprising a base plate, a pair o jaws pivoted on said base plate and a pair of plates yieldingly mounted on said base plate and functiomng as bearings for the jaws, and means for coiling the drawn wire.

4. In a wire drawing-machine, the combination with a support of a drum suitably mounted thereon for holding the wire to be drawn, a die, gri ping devices mounted on an endless chain or engaging and releasing the wire, said gripping devices comprising a base plate, a pair of aws pivoted on sai base plate and a pair of plates yieldingly mounted on said base plate and functioning as bearings for the jaws, and a receiving drum suitably mounted on said sup ort around which the drawn wireis wound.

5. In a'wire drawing machine, the combination with a support, of a drum for holding-the wire, 'a die, gripping devices mounted on an .endless chain and 006 erating sprocket wheels for. conveying saig chain,

ppir of plates yieldingly mount-' said gripping devices comprising a base plate, a pair of jaws pivoted on said base plate. and a pair of plates yieldingly mounted thereon and functioning as b arings for the jaws.

6. In a wire drawing machine, the combination with a die, of a support therefor, and means for pulling the wire through the die, said means including gripping devices comprising a base plate, a pair of jaws pivoted on said base plate and a pair of -plates yieldingly mounted on said base plate and functioning as bearings for the jaws.

7. In a wire drawing machine, the combination with a die, of a support therefor, and means for pulling the wire through the die, said means including a gripping device comprising a base plate, a pair of jaws pivoted on said base plate and a pair of plates yieldingly mounted on, said base plate and functioning as bearings for the aws. Y

8. In a wire drawing machine, the combination with a die, of a support therefor, means for pulling the wire through the die, said means including gripping devices comprising a base plate, a pair of jaws pivoted on said base plate and a pair of plates yieldingly mounted on said base plate and functioning as bearings for the jaws, and means for insuring a constant pull on said wire.

9. In a wire drawing machine, the combination with a die, of means for continuously pulling the wire through the die, said means including gripping devices comprising a base'plate, a pair of jaws pivoted on said base plate and a pair of plates yieldingly mounted on said base plate and functioning as bearings for the jaws.

Signed at New York, in the county of New York and State of New York this 14th day of March, A. D. 1918. I

FREDERICK G. KEYES. 

